Core Insights - Bionics is driving innovation in intelligent robotic systems, particularly through the design and development of biomimetic robotic fish inspired by the superior maneuverability and perception of fish in complex underwater environments [1][4] - Traditional visual and sonar sensing technologies face performance limitations in challenging underwater conditions, while fish possess a unique lateral line system that provides a new paradigm for underwater robotic perception [1][4] - The research team from Peking University has proposed a novel data-driven framework that integrates modal decomposition and physical modeling for self-motion state estimation in biomimetic robotic fish [1][4] Summary by Sections Introduction to Bionics and Robotic Fish - Bionics connects nature and engineering, leading to advancements in intelligent robotic systems [1] - Fish exhibit exceptional maneuverability and perception in complex underwater environments, inspiring the design of biomimetic robotic fish [1] Challenges in Underwater Robotics - Traditional sensing technologies struggle in low-light and acoustically noisy underwater environments [1] - The unique lateral line system of fish, which senses water flow and pressure changes, offers a new approach for underwater robots [1] Development of Artificial Lateral Line System (ALLS) - Researchers have developed ALLS to simulate fish perception capabilities, applicable in flow field sensing, obstacle avoidance, and multi-fish coordination [1][4] - Accurate estimation of self-motion states, such as speed and trajectory, is crucial for autonomous intelligent robots [1] Proposed Framework for Self-Motion State Estimation - The new framework combines Proper Orthogonal Decomposition (POD) with physical modeling to estimate self-motion states [2][6] - The method extracts dominant modes related to fish movement from spatiotemporal pressure data collected by artificial lateral line sensors [2][6] Results and Validation - The model demonstrates robustness and generalization across various oscillation parameters, fish morphologies, and complex flow fields [4][14] - The research provides an efficient and reliable autonomous perception strategy for underwater biomimetic robots [4][14] Optimization of Sensor Layout - The study reveals redundancy in sensor arrangements and proposes optimized sensor layout strategies to reduce system complexity [11][13] - The optimal sensor distribution is validated through experiments, enhancing the understanding of fluid dynamics principles [13] Generalization to Complex Scenarios - The proposed method shows strong generalization capabilities in dynamic conditions and across different fish models [14] - It maintains robust state perception even in complex flow fields with wake interference, showcasing practical value [14] Conclusion and Future Directions - This research not only offers a solution for motion state estimation in robotic fish but also provides insights into the sensory mechanisms of real fish [16] - The integration of natural intelligence with engineering practices paves the way for the future development of intelligent, autonomous, and collaborative underwater robots [16]

Core Viewpoint - The article discusses the development of super-adhesive hydrogels that can maintain adhesion in wet environments, inspired by natural adhesive proteins, and designed using AI models to enhance material properties and applications [4][15]. Group 1: Research Background - The research was published in the prestigious journal Nature, highlighting the innovative approach to designing hydrogels that can be used in various applications, including biomedical and industrial fields [3][4]. - The study focuses on the challenges of creating hydrogels that are both soft and adhesive, which traditionally required extensive trial and error, making the process costly and time-consuming [2][4]. Group 2: Methodology - The research team analyzed 24,707 natural adhesive protein sequences to identify characteristics that could be replicated in synthetic hydrogels [10]. - They designed 180 different hydrogels based on the identified features from natural proteins, utilizing machine learning to optimize the design process [10][13]. Group 3: Key Findings - One of the developed hydrogels, named R1-max, successfully adhered a rubber duck to a rock underwater, demonstrating its ability to withstand waves and tides [13]. - Another hydrogel, R2-max, was able to seal a 20 mm diameter hole in a water-filled pipe, maintaining its leak-proof capability for over five months [13][15]. Group 4: Implications - The super-adhesive hydrogels have the potential to revolutionize biomedical applications, such as prosthetic coatings and wearable biosensors, as well as industrial applications where stable adhesion in wet conditions is critical [15]. - The research signifies a shift in how AI is utilized in material science, moving from exploratory use to actively improving and assisting in material design and generation [15].

Core Viewpoint - The article discusses the challenges and limitations of traditional and new methods in SLAM (Simultaneous Localization and Mapping), emphasizing the need for data-driven approaches to improve performance and reliability in real-world applications [6][12]. Group 1: Traditional Methods - Traditional SLAM methods have not significantly changed and struggle with corner cases, leading to unresolved issues [7]. - These methods do not show noticeable performance improvements as data increases, limiting their scalability [7]. Group 2: New Methods - New SLAM methods are often not generalizable, with performance heavily dependent on data distribution, unlike traditional methods which are nearly universally applicable [12]. - Current new methods fail to meet performance benchmarks on affordable hardware, requiring at least 100ms/frame for mapping and 20ms/frame for localization to be viable [12]. - Debugging new methods is challenging; issues often require additional data rather than providing clear solutions, unlike traditional methods which can identify root causes [12]. Group 3: Market Expectations - New methods typically achieve around 70-80% success in scenarios where traditional methods succeed, but they also struggle in areas where traditional methods fail, achieving only 60-70% success [13]. - End-user applications expect 100% reliability in solvable scenarios, while failures in challenging scenarios are acceptable [13]. Group 4: Future Trends - The future of SLAM is likely to be dominated by data-driven methods, as leveraging GPU capabilities to process large datasets will outperform manual tuning of noise parameters in traditional methods [13].

Core Viewpoint - The article discusses the evolution of artificial intelligence (AI) through the lens of renowned AI scientist Fei-Fei Li, focusing on her career, the creation of ImageNet, and her current work on spatial intelligence with World Labs. It emphasizes the importance of understanding and interacting with the three-dimensional world as a crucial step towards achieving Artificial General Intelligence (AGI) [2][9][25]. Group 1: ImageNet and Deep Learning - ImageNet was created as a data-driven paradigm shift, providing a large-scale, high-quality labeled dataset that laid the foundation for the success of deep learning and neural networks [9][10]. - The project has over 80,000 citations and is considered a cornerstone in addressing the data problem in AI [8][9]. - The transition from object recognition to scene narrative is highlighted, showcasing the evolution of AI capabilities from identifying objects to understanding and describing complex scenes [17][18]. Group 2: Spatial Intelligence and World Labs - Spatial intelligence is identified as the next frontier in AI, focusing on understanding, interacting with, and generating three-dimensional worlds, which is deemed a fundamental challenge for achieving AGI [9][25]. - World Labs, founded by Fei-Fei Li, aims to tackle the complexities of spatial intelligence, moving beyond flat pixel representations and language models to capture the three-dimensional structure of the world [22][25][31]. - The article discusses the challenges of modeling the real world, emphasizing the need for high-quality data and the difficulties in understanding and interacting with three-dimensional environments [28][29]. Group 3: Entrepreneurial Spirit and Personal Journey - Fei-Fei Li's journey from being an immigrant to a leading AI researcher and entrepreneur is highlighted, showcasing her entrepreneurial spirit and the importance of embracing difficult challenges [36][34]. - The article emphasizes the mindset of "intellectual fearlessness" as a core trait for success in both academic research and entrepreneurship, encouraging individuals to focus on building and innovating without being hindered by past achievements or external opinions [9][36][37]. - The narrative includes her experiences running a laundromat as a teenager, which shaped her entrepreneurial skills and resilience [34][36].